The aim of this application note is to show to scan the 4x4 matrix keypad multiplexed with a four 7-segment display. The software attached to this application note scans the pressed key and displays it on the multiplexed 7- segment LEDs. Thi

基于lpc1100嵌入式开发板的矩阵键盘的编程，代码简单易懂。-Based on embedded development board lpc1100 matrix keypad programming, code easy to understand.